when you're not looking

1st text:
"I know you have been going thru a lot of stress lately. And we all have our own ups and downs in the office as well as at home. But, we work great as a team and you are the reason behind it. You have inspired us to do our best and in return you have been the best boss we could ever ask for. I know that me and the gals really appreciate your patience and guidance as our leader. And we know that you are always there for us, standing up for us and supporting us. I don't know why but I feel I must let you know that you are the reason I'm still in the company. Friends can be made but the bond we share as a team with you will never be the same elsewhere. Pls remember this during those mornings when you have to drag yourself to work that your gals look up to you and appreciate you the most even though we sometimes have to deal with the worst of office issues. It gets easier when we are united. You are my boss but I've always looked at you as a sister and a friend and a guide. Maybe even my mentor. Thanks for being the best boss one can ever have. "

2nd text:
"...Smile. You have not smiled in a while. I mean, sincerely. Something is missing in you but you cover it up well. But I can sense it. Just smile."

3rd text:
"You don't need energy to smile. You need to feel good for that. And if you don't have even one reason to smile in a day, then something is missing. I know you love your work but a break to recharge would do you good. Go off to K**** since you were searching for it online. Do anything just to make yourself feel good again. I know it's easier said than done but if you can do anything to make yourself feel happy and forget work over this coming long weekend, pls go do it. So that next week you have a reason to smile even if it's just the memories."

4th text:
"Shut down the brain and activate the heart at 5.15pm on 28th August, all the way till the end of 31st August. I know we have an event on 1st Sept, but there is very little you can do by thinking about it at home and there is a lot you can do if you come in all recharged and good mood on Tuesday. Do that for yourself and for us. I need a noisy, chirpy, hyper, you back. When I look up from my table and if I see you're in high spirit, I'm also inspired to be more positive. But when I see the tired face and those empty eyes, I wonder where did we go wrong that you are carrying this burden alone."

Those are the exact words from one of my staff.
We've been working together since 2006..
Now, she's noticing, my 'light' is no longer there..

Is it really gone?
For good?